I am trying to parse and extract values from my time data 2018-03-11 13:15:31.734874+01:00.
I'm using strptime() to do this with the %Y %m %d %H:%M:%S.%f %Z format but I am getting this error:
ValueError: time data '2018-03-11 13:15:31.734874+01:00' does not match format '%Y %m %d %H:%M:%S.%f %Z'
Also, I don't know how to handle the +1:00 in my time data. Can anyone help?
There are two problems here to solve.
First is the format string. It should be %Y-%m-%d %H:%M:%S.%f%z to match exact date separators and timezone sequence (without space).
From strftime and strptime Behavior:
%z (lower case) UTC offset in the form +HHMM or -HHMM (empty string if the object is naive). (empty), +0000, -0400, +1030
Second is the colon (:) in timezone offset '+01:00'. That can be left out using substring: s[:-3]+s[-2:] or string substitute.
So the final answer is as below.
from datetime import datetime
s = '2018-03-11 13:15:31.734874+01:00'
datetime.strptime(s[:-3]+s[-2:], '%Y-%m-%d %H:%M:%S.%f%z')
%Y %m %d should be changed to %Y-%m-%d to match with the time string. Also, you need to remove the last : from the input to use with %z.
Here is how you should do:
import datetime
s = '2018-03-11 13:15:31.734874+01:00'
print(datetime.datetime.strptime(''.join(s.rsplit(':', 1)), '%Y-%m-%d %H:%M:%S.%f%z'))
# 2018-03-11 13:15:31.734874+01:00
At first:
%Y %m %d will not match 2018-03-11. You need to adapt it to the time string! %Y-%m-%d instead should work.
Secondly:
IF you are in python3, the %z was added for time stamps. However the timestamp has to be without the colon, e.g. +0100instead of +01:00. Therefore, if you use python3 this works:
>>> time_string = '2018-03-11 13:15:31.734874+01:00'
>>> time_string = ''.join(time_string.rsplit(':', 1))
>>> datetime.datetime.strptime(time_string, '%Y-%m-%d %H:%M:%S.%f%z')
datetime.datetime(2018, 3, 11, 13, 15, 31, 734874, tzinfo=datetime.timezone(datetime.timedelta(0, 3600)))
Btw the time_string after the editing looks like that:
>>> time_string
'2018-03-11 13:15:31.734874+0100'
IF you are in python2, the %z won't work, here you have to use the parse function of the dateutil module, which is straight forward.
>>> from dateutil.parser import parse
>>> parse('2018-03-11 13:15:31.734874+01:00')
datetime.datetime(2018, 3, 11, 13, 15, 31, 734874, tzinfo=tzoffset(None, 3600))
Related
Trying to parse a datetime string to unix:
from calendar import timegm
from datetime import datetime
print(timegm(datetime.strptime(('2021-07-21 00:00:07.223977216+00:00'), '%Y-%m-%d %H:%M:%S.%f')))
Results in
ValueError: time data '2021-07-21 00:00:07.223977216+00:00' does not match format '%Y-%m-%d %H:%M:%S.%f+00:00'
Tried a lot, cant get anywhere so far ...
Your date is in ISO format, so you can use datetime.fromisoformat:
>>> from datetime import datetime
>>> datetime.fromisoformat("2021-07-21 00:00:07+00:00")
datetime.datetime(2021, 7, 21, 0, 0, 7, tzinfo=datetime.timezone.utc)
So if you look at the format of the date time you are providing, it does not have the fractional seconds the formatter is looking for:
# '2021-07-21 00:00:07+00:00' <- this date time
# '%Y-%m-%d %H:%M:%S.%f' <- in this format, is parsing like below
# 'YYYY-MM-DD HH:MM:SS.ff' (note the ff part is missing, then there's a +00:00 part leftover so the format is breaking)
If you don't need the microseconds, remove the '.%f' part from your format string. Otherwise, if you're parsing a series of values where some have the fractional part, you're going to need to give both options:
try:
timestamp = datetime.strptime(your_string_here, '%Y-%m-%d %H:%M:%S.%f')
except ValueError:
timestamp = datetime.strptime(your_string_here, '%Y-%m-%d %H:%M:%S')
I work with api in python3 in this api return date like this
'Jun 29, 2018 12:44:14 AM'
but i need just hours, minute ad second like this
12:44:14
are there a fonction that can format this
It looks like the output is a string. So, you can use string slicing:
x = 'Jun 29, 2018 12:44:18 AM'
time = x[-11:-3]
It's best to use negative indexing here because the day may be single-digit or double-digit, so a solution like time = x[13:21] won't work every time.
If you're inclined, you may wish to use strptime() and strftime() to take your string, convert it into a datetime object, and then convert that into a string in HH:MM:SS format. (You may wish to consult the datetime module documentation for this approach).
Use the datetime module. Use .strptime() to convert string to datetime object and then .strftime() to convert to your required string output. Your sample datetime string is represented as '%b %d, %Y %H:%M:%S %p'
Ex:
import datetime
s = 'Jun 29, 2018 12:44:14 AM'
print( datetime.datetime.strptime(s, '%b %d, %Y %H:%M:%S %p').strftime("%H:%M:%S") )
Output:
12:44:14
I have added timezones to my datetime column in my postgreSQL DB.
Now I have the error above everytime I want to compare dates.
On some points I have JSON requests, datetime objects are passed as strings, so I need to parse them, with the additonal timezone info I get:
ValueError: time data '2018-05-02 11:52:26.108540+02:00'
does not match format '%Y-%m-%d %H:%M:%S.%f+%Z'
Earlier I had:
2018-05-02 11:52:26.108540
which worked perfectly with:
%Y-%m-%d %H:%M:%S.%f
The new information which has been added is: +02:00
In the strptime docu it is telling me to use %z or %Z but it does not work.
EDIT:
I am using Python 3
The issue is the offset +02:00 you need to remove the colon ':' then it will work:
In[48]:
dt.datetime.strptime('2018-05-02 11:52:26.108540+0200', '%Y-%m-%d %H:%M:%S.%f%z')
Out[48]: datetime.datetime(2018, 5, 2, 11, 52, 26, 108540, tzinfo=datetime.timezone(datetime.timedelta(0, 7200)))
So you would need to go through all your datetime strings and remove this in order for strptime to parse it correctly
You need to remove the colon and use the small %z for this to work.
>>> s = '2018-05-02 11:52:26.108540+02:00'
>>> fmt = %Y-%m-%d %H:%M:%S.%f%z'
>>> time.strptime(s, fmt)
time.struct_time(tm_year=2018, tm_mon=5, tm_mday=2, tm_hour=11, tm_min=52, tm_sec=26, tm_wday=2, tm_yday=122, tm_isdst=-1)
I have string time in the following format
2016-12-10T13:54:15.294
I am using the following method to format the time:
time.strptime(ts, '%b %d %H:%M:%S %Y')
Which throws an error:
time data did not match format: data=2016-12-10T13:54:15.294 fmt=%a %b %d %H:%M:%S %Y
Any ideas where I am going wrong?
You need to first parse the string as its formatted, then print it out the way you want.
>>> import datetime
>>> ts = "2016-12-10T13:54:15.294"
>>> parsed = datetime.datetime.strptime(ts, '%Y-%m-%dT%H:%M:%S.%f')
>>> parsed
datetime.datetime(2016, 12, 10, 13, 54, 15, 294000)
>>> parsed.strftime('%b %d %H:%M:%S %Y')
'Dec 10 13:54:15 2016'
I think your date format is incorrectly specified in string. This should work:
import datetime
a = '2016-12-10T13:54:15.294'
b= datetime.datetime.strptime(a,'%Y-%m-%dT%H:%M:%S.%f')
print b
The error is not wrong, the format string is not even close to the string you're trying to parse.
You have {year}-{month}-{day}T{hour}:{minute}:{second}.{milliseconds} but trying to parse it with {weekday name} {month name} {day} {hour}:{minute}:{second} {year}. Did you copy this from somewhere?
According to the documentation, your format string should look more like %Y-%m-%dT%H:%M:%S.%f.
>>> time.strptime('2016-12-10T13:54:15.294', '%Y-%m-%dT%H:%M:%S.%f')
time.struct_time(tm_year=2016, tm_mon=12, tm_mday=10, tm_hour=13, tm_min=54, tm_sec=15, tm_wday=5, tm_yday=345, tm_isdst=-1)
Your format string is not correct.
You can check format string just using strftime method of date object. For example:
d = datetime.datetime.now()
print(d.strftime('%Y-%d-%mT%H:%M:%S'))
Output:
Dec 16 11:02:46 2016
But you have string in following format 2016-12-10T13:54:15.294, so you just need to change format string:
print(time.strptime(ts, '%Y-%d-%mT%H:%M:%S.%f'))
output:
time.struct_time(tm_year=2016, tm_mon=10, tm_mday=12, tm_hour=13, tm_min=54, tm_sec=15, tm_wday=2, tm_yday=286, tm_isdst=-1)
I'm using python 3.5.
I have a string formatted as mm/dd/yyyy H:MM:SS AM/PM that I would like as a python datetime object.
Here is what I've tried.
date = "09/10/2015 6:17:09 PM"
date_obj = datetime.datetime.strptime(date, '%d/%m/%Y %I:%M:%S %p')
But this gets an error because the hour is not zero padded. The formatting was done per the table on the
datetime documentation, which does not allow the hour to have one digit.
I've tried splitting the date up, adding a zero and then reassembling the string back together, while this works, this seems less robust/ideal.
date = "09/10/2015 6:17:09 PM"
date = date.split()
date = date[0] + " 0" + date[1] + " " + date[2]
Any recommendation on how to get the datetime object directly, or a better method for padding the hour would be helpful.
Thank you.
There is nothing wrong with this code:
>>> date = "09/10/2015 6:17:09 PM"
>>> date_obj = datetime.datetime.strptime(date, '%m/%d/%Y %I:%M:%S %p')
>>> date_obj
datetime.datetime(2015, 9, 10, 18, 17, 9)
>>> print(date_obj)
2015-09-10 18:17:09
The individual attributes of the datetime object are integers, not strings, and the internal representation uses 24hr values for the hour.
Note that I have swapped the day and month in the format strings as you state that the input format is mm/dd/yyyy.
But it seems that you actually want it as a string with zero padded hour, so you can use datetime.strftime() like this:
>>> date_str = date_obj.strftime('%m/%d/%Y %I:%M:%S %p')
>>> print(date_str)
09/10/2015 06:17:09 PM
# or, if you actually want the output format as %d/%m/%Y....
>>> print(date_obj.strftime('%d/%m/%Y %I:%M:%S %p'))
10/09/2015 06:17:09 PM